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(-No' Moden) i G. R. GOTTRELL.

METHOD 0F AND APPARATUS FOR GARBURBTING AND MIXING GAS AND AIR.

No. 349,211 f Patented Sept. 14,1886.

NA semis. nwugmgnnmr. wmf-gum nu UNITED STATI-:s PATENT OFFICE.

GEORGE BOSCO OOTTRELL, OF NEV YORK, N. Y.

METHOD 0F AND APPARATUSv FOR CARBURETING AND MIXING GAS AND AIR.

SPECIFICATION forming part of Letters Patent No. 349,211, datedSeptember 14, 1886.

Application filed January 25, 1886. Serial No. 189,662.

To @ZZ whom it may concern.-

Be it known that I, GEORGE Bosco COT- TRELL, a citizen of the UnitedStates, residing at New York, in the county of New York and State of NewYork, have invented new and useful Improvements in Method of andApparatus for Oarbureting and Mixing Gas and Air, of which the followingis a specication, reference being had to the accompanying drawing.

My invention is an improved method of and apparatus for carbureting andmixing gas and air; and it consists, first, in heating the gas andconveying it to a carbureting-chamber containing crystallizednaphthaline, and thereby enriching the gas;second,introducingamix tureof oxyhydrocarbon gas and atmospheric air into the carbureting-` chamberwith the heated enriched gas; third, condensing the mixture of enrichedcarbureted gas and oxyhydrocarbon gas andk air, and, fourth, purifyingthe same preparatory to introducing it to the service-pipes.

My invention further consists in the peculiar construction andcombination of devices that will be more fully set forth hereinafter,a-nd particularly pointed out in the claims.

The object of my invention is to provide a method of and apparatus forcarburcting fixed illuminating-gas, and submitting it to any desiredpressure, and thereby cause it to yield a light of uniform and anydesired candle-power.

The accompanying drawing is a vertical longitudinal central sectionalview of an apparatus embodying my invention.

A represents a carbnreting-chamber, which is preferably made cylindricalin form, having its upper end forming the section of a cone andcommunicating with a purifying-chamber, B,which forms a cylinder ofreduced diameter. Surrounding theinclined sides of the upper portion ofthe carburetin gchamber is a waterjacket, C.

D represents the usual gas-meter-such as supplied by the gas companiesin cities that are illuminated by gas-from which extends a pipe, E,having a series of branch pipes, F. Coils F are formed in the lower endsof these `branch pipes below the bottomof the carbureting-chamber, andthe upper ends of the said pipes are provided with downwardly-extendingdischarge-pipes, F2. The pipe G leads (No model.)

from one side of the carbureting-chamber to a mixing-machine, H. Thismixing-machine is divided into two compartments, h and h, which are lledto any desired depth with water. The pipe G leads to the compartment 7L,which is only about one-third as large as the compartment 7L', and thelatter has an inlet-pipe, I, for supplying atmospheric air. In thecompartment h is journaled a horizontal rotating screw or pump, K, andin the compartment h is journaled a similar pump or screw, L, which hasabout three times the capacity of the pump K. Any other preferred formof pump may be substituted for those hereinbefore shown and described,and the water may be omitted from the compartments h and h', as theseare particulars which are not essential to the operation of myinvention.

From the compartment h extends the pipe M, and from the compartment Itextends a pipe, N, of about three times the capacity of the pipe M.These pipes M and N lead to a mixing-chamber or union pipe, O, thecapacity of which is a little more than equal to the combined capacityof the pipes M and N.

P represents a pipe which extendshfroln the mixing-chamber or union pipeO into the carbureting-chamher, and the inner end of the said pipe P isturned downwardly in the center of the carbureting-chamber. A stop-cock,P', is located in the pipe P, and from the said pipe depends a branchpipe, R,'the lower end of which is bent at right angles and extendshorizontally under the horizontal branch of the pipe E, and at asuitable distance below the same and below the coils F. A series ofburners, R', are provided for the horizontal branch of the pipe It. Fromthe union pipe O extends a second pipe, S, which leads to any desiredportion of the building, and is provided with burners S', (one or more,)which are used for heating or culinary purposes.

In order to rotate the screw-pumps K and and L, I connect them bysuitable gearing with a shaft, T, which has the pinion T. A gearwheel,U, meshes with the pinion T', which gear-wheel and pinion are locatedbetween the compartments h and h', and on the upper side of themixing-machine is journaled a shaft,V, having a pinion, Y', that mesheswith the gearwheel U. {To the outer end of the shaftV is attached adrum, XV. A crank, XV', is also provided for the shaft V, by means ofwhich the latter may be rotated by hand. A cord, X, is coiled on thedrum XV and passes over a pulley, Y, and to the free end of the cord isattached a Weight, Z. It Will be readily understood that as the Weightdescends, the shaft V will berotated, and thereby cause the screwpumps Kand L, which are geared to the said 1o shaft, to rotate.

I do not desire to limitmyself to the Weight, cord, and drum forrotating the screw-pumps, as these arey merely shown for convenience inillustration, and any preferred motor may be employed for actuating thepumps.

The earbureting-ehamber is partly filled to any required depth withcrystallized naphthaline, and the purifying-chamber B is filled withexcelsior, and any suitable purifying 2o chemicals-such as lime, orchloride of calcium oramixture of these and charcoal. The gas from themeter passes through the pipe l1] to the coils F, and is heated by theflames from the burners R', and forced through the 2 5 pipes F into thecarbureting-chamber, Where it is enriched or carbureted by thecrystallized naphthaline. This enriched gas is too rich to burn, and aportion of it passes through the pipe G; into the compartment h, andfrom 3o thence is forced by the pump li through the pipe Minto themixing-chamber or union pipe O. Atmospheric air is sucked into thecompartmcnt h.' by the pump L, and forced through the pipe N into t-hemixing-chamber or union pipe O, Where it mixes with the gas in theproportion of about three parts to one of the latter, forming a bluegas, which is suitable for heating and cooking purposes, but not forilluminating purposes. A portion of this blue gas is supplied to theburners R for heating the coils F', and a portion also passes throughthe pipe S to the burners S. The mixture of oxyhydrocarbon gas and airis supplied through the pipe P to the center of the carburetingchamber,and there discharged upon the heated carbureted gas therein, whichcauses the said gases to mingle and expand against the sides ofthecarbuietingchamber, where the heavier hydrocarbons are condensed by thewaterjacket for the purpose of removing carbonaceous particles thatwould cause the gas to smoke when burned. From the carburetingchamberthe gas passes upward through the purifyingchamber B to the service-pipea., by which it is conducted to the burners for illuminating purposes.

A gas-gage, b, is provided for the carbureting-ehamber, and a stop-cock,c, is provided for the horizontal branch of the pipe R, the saidstop-cock being connected with the gasgage by a rod, d. Gas is thusadmitted to the burners R in a quantity proportioned to the degree ofpressure in the carbureting-chamber, by which means the gas therein ismaintained at a uniform pressure and supplied to the service-pipe, andthereby caused to yield a steady and uniform light. By regulating thequantity of gas and air supplied to the carburetingchamber anilluminating-gas of any desired candle-power may be supplied to theburners.

The mixture of oxyhydroearbon gas and air in the proportions specifiedforms a heatinggas which is very cheap and serviceable.

Crystallized naphthaline is a residue o1' coaltar or crude petroleum,solid in form, and volatile at 115 Fahrenheit.

By oxyhydrocarbon gas I mean the mixture of ordinary carburetedhydrogen, Vapor, and oxygen of the atmosphere, or, in other words, gasafter having been enriched or carburcted in the chamber containinghydrocarbon-such as naphthaline-aud then mixed with oxygen or air.

A branch pipe, E, connects the pipe E at the upper end of the meter withthe servicepipc a at the upper end of the carburetor. This pipe E has avalve, c', and the pipe E has a valve, c. 3y closing the valve c andopening the valve c the gas may be conducted directly from the meter tothe service-pipe without passing into the carburetor or mixing machine.

Having thus described my invention, I claim- 1. The method of producingcarbureted gas of uniform candle-power, consisting` Iirst, in heatingthe gas; second, conveying it to the carbureting-chamber, and therebyenriching the gas; third, introducing a mixture of oxyhydrocarbon gasand atmospheric airinto the carbureting-ehamber with the heated andenriched gas; fourth, condensing the mixture of enriched earbureted gasand oxyhydrocarbon gas and air; and, fifth, purifying the same forilluminating purposes, substantially as described.

2. The earbureting-chamber having thewater-jacket and thepurifying-chamber com mu nicating With the carbureting-chambcr,substantially as described.

3. The carbureting-chamber having the iuclined upper sides and theWater-jacket surrounding them, and the purifying-chamber communicatingwith said carburcting-chamber, substantially as described.

4. rlhe combination of the pcarburetingchamber, the heating-coils forsupplying heated gas thereto, means for heating the coils, means formixing gas and air, and the pipe for supplying the mixture ofoxyhydrocarbon gas and air to the carburcting-chamber, substantially asdescribed.

5. The combination of the carburctingchamber, the pipes F, for supplyingheated gas thereto, the mixing-chamber O, communicating with thecarbureti11g-chamber, and the means for supplying oxyhydrocarbon gas andatmospheric air to the mixing-chamber in suitable proportions,substantially as described.

6. rlhe combination of the earburetingchamber, the mixing-machinecommunicating therewith and having the pumps K. and L, and themixing-chamber communicating with ICO ITO

III() `the mixing-machine, and also communicating with thecarbureting-chamber for supplying a mixture of gas and air to thelatter, substantially as described.

7. The combination of the carburetingchamber having the gas-gage and theheating-coils with the pipe It, having the burning the gas, thencarbureting it, withdrawingv such gas i'rom the carburetor and mixingwith it a suitable proportion of atmospheric air and conducting it tothe place of use, substantially as described.

9. The method of producing carbureted gas of the desired candle-powerfor illuminating or heatingpurposes, which consists in heat` ing thegas, then carbureting it by conducting it in a warm or heated state incontact with volatile hydrocarbon, withdrawing from the carburetor aportion of such gas and mixing with it a delinite and measuredproportion of atmospheric air to adapt it for use, substantially asdescribed.

10. rIhe method ofA producing carbureted gas of the desired candle-powerfor heating or illuminating purposes, which consists in heating orwarming the carbureting-chamber, supplying heated gas thereto andcarbureting it with hydrocarbon vapors, withdrawing such carburcted gasand mixing it with a suitable measured proportion olfy atmospheric airto adapt it for use, substantially as described.

11. rIhe method of producing carbureted gas of the desired candle-powerfor illuminating or heating purposes, which consists in heating the gasand mingling therewith hydrocarbon vapors, withdrawing from thecarburetor a portion of such gas and mixing with it a suitableproportion of atmospheric air, conducting such mixtures into thecarburetingchamber, and mingling therewith heated enriched gas to adaptit for use, substantially as power for illuminating or heating purposes,which consists in enriching gas with hydrocarbon vapor, forming amixture of gas and air by uniting them in definite and measuredproportions, and then mixing the enriched gas with the mixture of gasand air to form a gas of the desired quality, substantially asdescribed.

14. The method of preparing a carbureted mixture of air and gas of thedesired candlepower for illuminating or heating purposes, which consistsin vaporizing solid or crystalline hydrocarbons by heat and enrichinggas with such vapors, then uniting with such euriched gas a measuredproportion of atmospheric air to adapt it for use, substantially asdescribed.

15. The combination, with a carburetingchamber, of means for heating airand supplying it to such chamber in contact with car-V bureting materialnear its bottom, and means, as described, arranged at the top ofthecarburetor for condensing and removing heavy hydrocarbon particles fromthe gas, for the purpose described.

16. A carburetor provided with supplypipes having heating-coils, meansfor heating such coils and the base of the carburetor, in combinationwith means l'orrcooling the gas and removing impurities from it, placedat the top of the carburetor, substantially as described.

17. A carburetingchamber having means for heating it at the base, andhaving a waterjacket cooling-surface applied to the top for the purposeset forth, substantially as described.

18. `A carbureting-chamber having means for heating and vaporizing thecarbureting material, and having inclined water-jacket top forcondensing and removing an excess of hydrocarbon particles from the gas,substantially as described.

19. In combination with a carburetor, a gasmeter, a connectingsupply-pipe leading from the meter to the carburetor, drums or pumps fordelivering gas and air in measured proportions, and pipes connectingsuch measuringdrums with the carburetor, whereby carbureted gas and airmay be mixed in suitable proportions to form illuminating or heatinggas, substantially as described.

In testimony that I claim the foregoing as my own I- have hereto affixedmy signature in presence of two witnesses.

GEORGE ROSCO COTTRELL.

lVitnesses:

BALLARD S. DUNN, J. FRANK PATTERSON.

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